A142005 Primes congruent to 1 mod 31.

311, 373, 683, 1117, 1303, 1427, 1489, 1613, 1861, 2357, 2543, 2729, 2791, 3163, 3659, 3907, 4093, 4217, 4651, 5023, 5147, 5209, 5333, 5519, 5581, 5953, 6263, 6449, 6883, 7069, 7193, 7937, 8123, 8681, 8867, 8929, 9239, 9859, 10169, 10789, 11161, 11471, 11657

Offset: 1

Author

N. J. A. Sloane, Jul 11 2008

Keywords

• nonn
• easy

Comments

Primes congruent to 1 mod 62. - Chai Wah Wu, Apr 28 2025

Links

• Vincenzo Librandi, Table of n, a(n) for n = 1..1000

Crossrefs

Cf. A000040, A141977.

Programs

Magma

[p: p in PrimesUpTo(12000) | p mod 31 eq 1 ]; // Vincenzo Librandi, Aug 17 2012

Mathematica

Select[Range[1,20000,31],PrimeQ] (* Vladimir Joseph Stephan Orlovsky, Apr 07 2011 *)

PARI

is(n)=isprime(n) && n%31==1 \\ Charles R Greathouse IV, Jul 01 2016